In need of a battery for a T9-Pro, purchased 2 of these units this past June and 1 has a failed battery. No more battery indicator comes on and unit is discharging with use and will not charge back up. The charge block is functioning as it should as I can use it on the other unit. Worried now my second T9 Pro will fail as well making these very nice Bluetooth speakers basically useless. Any help would be greatly appreciated here. Currently own 6 W-KING Bluetooth speakers and just love the best bang for your buck attributes of these speakers. Thank You…Tom Sr. PS..live in Canada and do not see the battery’s listed anywhere on Amazon or elsewhere.